Dust-guard.



L. Y. WILLIAMS.

DUST GUARD.

APPLICATION FILED 0019,1913.

Patented Nov. 17, 1914.

LAGEY Y. WILLIAMS, OF TOLEDO, OHIO.

DUST-GUARD.

Specification of Letters Patent.

' Patented Nov. 1t, 1914.

Application filed October 9, 1913. Serial Ne. 794,292. H v I To all whomit may concern Be it known that I, LACEY Y. 'Wnmus, a citizen of theUnited States, residing at Toledo, in the county of Lucas and State ofOhio, have invented certain new and useful Improvements in Dust-Guards,of which the following is a specification.

The invention appertains to dust guards,

such as generically disclosed in Letters Patent issued to me on October18, 1910, Nos. 973,462 and 973,463, and on February 13, 1912, No.1,017,277, the object being to improve the guard so the wood will notsplit and to render the same more durable" and efiicient in operation. I

The invention consists in certain novelties of construction andcombinations of parts as herein set forth and claimed.

The accompanying drawing illustrates a guard with the improvementsembodied therein and constructed according to the best mode of procedureI have so far devised for the purpose.

Figure 1 is a vertical sectional view of a journal box and my improveddust guard in the chamber at the back end ofthe box and a journal inelevation view. Fig. 2 is a perspective view of the guard removed fromthe chamber. Fig. 3 is a view of one reinforcing bar and one springremoved from the guard.

The guard comprises two complemental L-shaped sections A, A, each havinga long arm B and a short arm C, and fashioned at one edge to have asemicircular surface D, the edges of both halves of the guard be ingadapted to bear against and fit the dust guard bearing surface E back ofthe journal end F when the said halves are united and inserted withinthe chamber G at the rear end of the journal box H, as shown by Fig. 1.

To prevent the wood of the guard splitting on the lines ww, where thegrain is straight and the guard relatively weak,

when the same is subjected to strains by the movements of the journal, Icut a shallow channel I in the body of the wood of each half of theguard and insert a bar J within each channel and secure them in place byrivets K passed through the wood and the bars, as shown. The ends of thesaid bars L, L are extended far enough to pass through slots M formed inthe long arms of each half of the guard, which slots are each of greaterlength than the width of I a bar end L so' the halves of the guard can.

move toward and away. from each other to take up wear and alsb toallowthe passage of the journal collar when the journal is inserted in thebox.

The spring means of the guard against the bearing .at the rear of the.journal comprises two helical springs N, N of relatively high capacity,each seated within a groove 0 formed in the outer edge of a long arm,one end of each spring being fastened to the long arm by a nail or screwP and the other end secured to the projecting 'end L of a reinforcingbar by passing the free end of the spring around the bar, as shown, orotherwise attached thereto.

for forcing each-half i Obviously, I have produced an improved guardwhich is very durable and will not split and become inoperative, owingto the presence of the reinforcing bars, which lat ter perform theadditional function of holding the two halves of the guardin the sameplane so the edges will engage the dust guard bearing under allconditions of service. I

What I claim is:

A dust guard consisting of two complemental L-shaped sections, eachsectionv having a long arm B with a closed slot M, a short arm C, asemicircular bearing edge D, and a reinforcing bar J secured within aslot in the end of the section opposite the semicircular edge D, andsaid bar provided with a projecting end; said sections being oppositelydisposed to each other to form a circular opening and the projecting endof each bar J being located and movable within the closed slot M in anadjacent long arm B; and helical springs, each spring secured at one endto a section and the opposite end secured to the projecting end of thereinforcing bar of the opposite section; the said bars J J strengtheningthe sections against splitting on lines 00,-a2, and should splittingtake place holding the parts in their proper relative positions andpreventing displacement thereof.

In testimony whereof I aflix my signature in presence of two witnesses.

LACEY Y. WILLIAMS.

' Witnesses:

M. H. LOUGHLIN, ANNETTA B. WYLIE.

